4,5-Dicyano-1,3-dithiol-2-one

Also known as: 2-Oxo-1,3-dithiole-4,5-dicarbonitrile, 2-keto-1,3-dithiole-4,5-dicarbonitrile, 1,3-Dithiole-4,5-dicarbonitrile, 2-oxo-, 4,5-Dicyano-1,3-dithiolene-2-one

4,5-Dicyano-1,3-dithiol-2-one (CAS 934-31-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C5N2OS2 and a molecular weight of 168.19600 g/mol. Key properties include a melting point of 124ºC, a boiling point of 268.6ºC at 760 mmHg, a density of 1.7 g/cm3 and a flash point of 116.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 934-31-6
Jingsj CID: J-39533-5
Molecular Formula: C₅N₂OS₂
Molecular Weight: 168.19600 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	124ºC
Boiling Point	268.6ºC at 760 mmHg
Density	1.7 g/cm3
Flash Point	116.2ºC
Exact Mass	167.94500
PSA	121.13000
LogP	0.91316
Refractive Index	1.709

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4,5-Dicyano-1,3-dithiol-2-one?

The CAS number of 4,5-Dicyano-1,3-dithiol-2-one is 934-31-6.

What are the molecular formula and molecular weight of 4,5-Dicyano-1,3-dithiol-2-one?

4,5-Dicyano-1,3-dithiol-2-one has molecular formula C5N2OS2 and molecular weight 168.19600 g/mol.

What are the upstream and downstream products of 4,5-Dicyano-1,3-dithiol-2-one?

For 4,5-Dicyano-1,3-dithiol-2-one, Upstream Products: Bis(trichloromethyl) carbonate, Dimercaptomaleonitrile disodium salt; Downstream Products: Bis(carbonyldithio)tetrathiafulvalene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,5-Dicyano-1,3-dithiol-2-one (CAS 934-31-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39533-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.